体型大的生物由于行动慢, 不可能猎取到动物性食物.With very large organisms that are now relatively sluggish, animal food cannot be caught.素食者不吃任何动物性食物,易患维生素B12缺乏症.Vegans consume no animal products and are susceptible to vitamin B 12 deficiency....

“动物性”的英语可以翻译为：[医] animality ...